Home › Blog › Buying Guide › From Factory Floor to Your Workshop: Evaluating a Pre-Owned , Used , Secondhand, Surplus CNC Machines Before Purchase INVENTHOR IRIDIUM 200 CNC Vertical 2 Spindles Lathe made in Germany Here’s a tailored “Factory Floor → Workshop” style evaluation guide for a pre-owned / surplus Inventhor Iridium 200 (2-spindle vertical CNC lathe, Germany) — what to check, test, and measure to minimize your risk....